US3255776A - Milking machine pulsator - Google Patents

Milking machine pulsator Download PDF

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Publication number
US3255776A
US3255776A US256574A US25657463A US3255776A US 3255776 A US3255776 A US 3255776A US 256574 A US256574 A US 256574A US 25657463 A US25657463 A US 25657463A US 3255776 A US3255776 A US 3255776A
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US
United States
Prior art keywords
vacuum
time
pulsator
milking
vent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US256574A
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English (en)
Inventor
Daniel O Noorlander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dairy Equipment Co
Original Assignee
Dairy Equipment Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dairy Equipment Co filed Critical Dairy Equipment Co
Priority to US256574A priority Critical patent/US3255776A/en
Priority to DK53264AA priority patent/DK106706C/da
Priority to GB4848/64A priority patent/GB1045365A/en
Priority to NL6400927A priority patent/NL6400927A/xx
Application granted granted Critical
Publication of US3255776A publication Critical patent/US3255776A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/04—Milking machines or devices with pneumatic manipulation of teats
    • A01J5/10—Pulsators arranged otherwise than on teat-cups
    • A01J5/12—Pulsators arranged otherwise than on teat-cups with membranes
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/04—Milking machines or devices with pneumatic manipulation of teats
    • A01J5/10—Pulsators arranged otherwise than on teat-cups
    • A01J5/14—Pulsators arranged otherwise than on teat-cups electromagnetically controlled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86389—Programmer or timer
    • Y10T137/86445—Plural, sequential, valve actuations
    • Y10T137/86461—Variable cycle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric

Definitions

  • One object of this invention is to provide a pulsator which tends to stabilize the vacuum at the teat cup. This is accomplished by providing one pulsating system for the front teats and another system for the rear teats and v .all teats the same whereas studies show the rear teats contain 60% of the milk. Therefore, to finish milking the rear teats the front teats are milked dry for an appreciable period. This also is bad for the animal.
  • a further object of this invention is to provide a pulsator which can be adjusted to milk the rear teats faster than the front teats so all teats will be finished at the same time.
  • a simple timer which can be adjusted to vary the milking time of the front and rear teats by adjusting the percentage of time that the two pulsator valves are operated.
  • a further object of this invention is to provide means for increasing the'milking time of one pair with respect to the time the corresponding solenoid is energized. This is done by adjusting the size of the air vent to decrease the rate of loss of vacuum when the cup is vented. Specifically, where the pulsator is adjusted to give a 6040 (rear and front) ratio it is sometimes desirable to provide a smaller vent for the front teat system to somewhat increase the effective milking time on the front teats without decreasing the time on the rear teats.
  • a further object is to provide a pulsator which can be washed in place to flush out the system and to clean the vents. Keeping the vents clean has been a problem in the past but with this pulsator the vents can be cleaned by ejecting water through the vents. To make such a system practical it is necessary to have the pulsator electrically safe when wet and the present pulsator has the coils encapsulated to prevent any possible shorting.
  • FIG. 1 is a top plan view of the present pulsator withthe control therefor represented in schematic form;
  • FIG. 2 is a vertical section taken as indicated byline 22 in FIG. 1;
  • FIG. 3 is a plan view of the lower half of the pulsator with the coil section removed;
  • FIG. 4 is a vertical section taken as indicated by the meandering line 4-4 on FIG. 3;
  • FIG. 5 is a vertical section taken as indicated by line 5-5 on FIG. 2;
  • FIG. 6 is a graph showing the manner in which the orifice size can be employed to increase the effective milking time.
  • the present pulsator is housed in a body 10 having a lower portion 12 to which the upper portion 14 is connected.
  • the bottom part of the body is fabricated of plastic and has a vacuum connection'tube 16 mounted therein to communicate with the cross bore 18 which is plugged by plug 20.
  • the cross bore in turn, communicates with the vertical passages 22, 24, the upper ends of which form valve seats against which the resilient valves 26, 28 will seat when the ferromagnetic armatures 30, 32, which respectively carry the valves, are in their lower positions as illustrated in FIG. 2.
  • each armature 30, 32 is provided with a resilient valve 34, 36 which are respectively adapted to close or seat on the valve seats 38, 40 to block flow through the vent passages 42, 44 when the coils 46, 48 are energized (FIG. 4).
  • Each armature 30, 32 is designed, therefore, to connect the corresponding chamber 50, 52 to atmospheric pressure through the vents 42, 44 or to vacuum through the passages 22 and 24.
  • the lower portion of each chamber 50, 52 is provided with a depressed area 54, 56 to provide communication between the vacuum ports 22, 24 and the conduits 58 and 60 mounted in the plastic body and respectively adapted for connection to the rear and front teat cups of the usual milking machine.
  • the vacuum side of the pulsator is provided with an additional connector 62 which is shown capped by a plastic cover 64 but which can be used for connection to the claw or any other portion of a milking system which may be desirable under vacuum.
  • the two coils 46, 48 are encapsulated in plastic, such as epoxy, and the coil leads are brought out through the brackets 66 through which the body screws 68 pass, as seen in FIG. 4, to contact the prong type terminals 70.
  • the other lead of each coil can be grounded to the frame 72 through which a third body bolt 74 passes for ultimate connection to the vacuum inlet tube 16 which, in
  • the purpose in sealing the coils is to permit the body of the pulsator assembly to be operated when wet.
  • the vacuum will draw the Water into the corresponding chamber when the coil is energized.
  • the armature will drop down trapping the water in the chamber.
  • the coil is subsequently energized it will move rapidly upwardly and force some water out of the atmospheric vent to thoroughly clean the vent. This permits the vents to be kept open very simply and allows the entire interior of the pulsator to be cleaned without disassembly.
  • the connectors 58 and 60 are respectively adapted for connection to the rear and front teat cups.
  • the respective coils 46 and 48 are alternately energized by the arrangement schematically shown in FIG. 1 where motor 76 rotates the shaft 78 on which the two stacked cams 80, 82 are adjustably mounted to vary the degree of overlap of the lobe portions of the two cams. Bot-h lobes roll against the wheel 84 on the switch actuator to control movement of the switch plunger 88.
  • the switch is a single throw double throw switch and when the plunger is raised in the position shown in FIG. 1 lead 90 may be connected to the line L1 through the switch and when the lobe depresses the actuator the lead 92 will be connected while lead 90 will be disconnected.
  • the coils are alternately energized. This has a considerable advantage in that the amount of air being bled into the vacuum system during the rest phase of the milking is cut in half and the load on the vacuum pump remains more uniform with the result that the vacuum fluctuation at the teat cups is far more uniform than with the usual milking system. This promotes proper collapse of the teat cup inflation to provide proper relief of the teat.
  • a further advantage in the present arrangement is that the amount of overlap of the two cams can be adjusted to energize the coils for different percentages of the elapsed time for one revolution of the cam assembly.
  • a milking system energizes the front and rear teat cups for the same length of time but studies show that about 60% of the milk is in the rear teats with the front teats containing the remaining 40%. Therefore, I prefer to adjust the cam so as to energize the rear coil 60% of the time and the front coil 40% of the time. way the front and rear of the udder are milked dry at about the same time and the possible irritation of the front teats by reason of having been milked dry well ahead of the rear teats is eliminated.
  • a milking machine pulsator system comprising a vacuum source, housing means defining two chambers each of which is provided with a vent to atmosphere and a conduit, said vents being of unequal size, said conduits being in open communication with said chambers and adapted for connection to teat cups, a passage in the housing means connected to said vacuum source, a port in each chamber affording communication between the chamber and the passage, independent valve means in each chamber for alternately closing the vent and the port, means for operating each valve means, and timer control means for automatically repetitively and sequentially energizing said operating means, said timer control means including means for relatively adjusting the percentage of time the valve means close their respective vents whereby vacuum may be applied to one conduit for a greater percentage of time than to the other conduit.
  • the means for operating the valves comprises independent coil means for operating each valve means, and said timer control means including switch means for controlling energization of the coil means, cam means having a lobe which actuates the switch means to alternately energize the coil means, the switch means being actuated by the lobe to energize one coil and acting to energize the other coil during the dwell portion of the cam means, the cam means including two stacked cams of generally similar configuration which are adjustably mounted to vary the degree of overlap of the lobe portions to permit adjustment of the effective angular duration of the composite lobe portion and thereby adjust the percentage of time the coils are energized.

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  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • External Artificial Organs (AREA)
US256574A 1963-02-06 1963-02-06 Milking machine pulsator Expired - Lifetime US3255776A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US256574A US3255776A (en) 1963-02-06 1963-02-06 Milking machine pulsator
DK53264AA DK106706C (da) 1963-02-06 1964-02-04 Malkemaskinepulsator.
GB4848/64A GB1045365A (en) 1963-02-06 1964-02-05 Improvements in milking machines
NL6400927A NL6400927A (da) 1963-02-06 1964-02-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US256574A US3255776A (en) 1963-02-06 1963-02-06 Milking machine pulsator

Publications (1)

Publication Number Publication Date
US3255776A true US3255776A (en) 1966-06-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US256574A Expired - Lifetime US3255776A (en) 1963-02-06 1963-02-06 Milking machine pulsator

Country Status (4)

Country Link
US (1) US3255776A (da)
DK (1) DK106706C (da)
GB (1) GB1045365A (da)
NL (1) NL6400927A (da)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750228A (en) * 1970-06-18 1973-08-07 Essco Inc Green Bay Oscillating doctor-blade mechanism
US4782849A (en) * 1987-02-09 1988-11-08 The Boc Group, Inc. Control unit for intermittent suction system
US5902267A (en) * 1996-08-09 1999-05-11 Medo; Elena M. Breast pump system using wall vacuum source
EP1161858A1 (en) * 2000-06-06 2001-12-12 Interpuls S.P.A. Adjustable-phase pulsator for milking-machines
WO2011137332A1 (en) * 2010-04-30 2011-11-03 Technologies Holdings Corp. Pulsator apparatus and method of operation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379800A (en) * 1920-04-08 1921-05-31 Romeo A Casarotti Milking-machine
US1413546A (en) * 1920-03-09 1922-04-18 Warner Seward Alger Milking machine
US1924931A (en) * 1929-07-02 1933-08-29 Laval Separator Co De Pulsator for milking machines
US2418776A (en) * 1942-05-25 1947-04-08 Frederick W Kopplin Method and apparatus for centrifugally washing sugar, chemicals, etc.
US2660190A (en) * 1948-12-07 1953-11-24 Blondel Alfred Automatic blending device for liquids
US2912007A (en) * 1953-04-15 1959-11-10 Johnson Clarence Pilot operated four-way valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1413546A (en) * 1920-03-09 1922-04-18 Warner Seward Alger Milking machine
US1379800A (en) * 1920-04-08 1921-05-31 Romeo A Casarotti Milking-machine
US1924931A (en) * 1929-07-02 1933-08-29 Laval Separator Co De Pulsator for milking machines
US2418776A (en) * 1942-05-25 1947-04-08 Frederick W Kopplin Method and apparatus for centrifugally washing sugar, chemicals, etc.
US2660190A (en) * 1948-12-07 1953-11-24 Blondel Alfred Automatic blending device for liquids
US2912007A (en) * 1953-04-15 1959-11-10 Johnson Clarence Pilot operated four-way valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750228A (en) * 1970-06-18 1973-08-07 Essco Inc Green Bay Oscillating doctor-blade mechanism
US4782849A (en) * 1987-02-09 1988-11-08 The Boc Group, Inc. Control unit for intermittent suction system
US5902267A (en) * 1996-08-09 1999-05-11 Medo; Elena M. Breast pump system using wall vacuum source
EP1161858A1 (en) * 2000-06-06 2001-12-12 Interpuls S.P.A. Adjustable-phase pulsator for milking-machines
WO2011137332A1 (en) * 2010-04-30 2011-11-03 Technologies Holdings Corp. Pulsator apparatus and method of operation
US20110266476A1 (en) * 2010-04-30 2011-11-03 Schultz Nicholas E Pulsator Apparatus and Method of Operation
US8561644B2 (en) * 2010-04-30 2013-10-22 Technologies Holdings Corp. Pulsator apparatus and method of operation

Also Published As

Publication number Publication date
GB1045365A (en) 1966-10-12
NL6400927A (da) 1964-08-07
DK106706C (da) 1967-03-06

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